Observation of Excited $\Omega_c$ Charmed Baryons in $e^+e^-$ Collisions

TL;DR

This paper reports the observation and confirmation of four excited $ ext{Ω}_c$ baryon states in $e^+e^-$ collisions using Belle data, providing experimental validation of previously reported states by LHCb.

Contribution

The study provides the first confirmation of four narrow excited $ ext{Ω}_c$ states in $e^+e^-$ collisions, expanding the experimental understanding of charmed baryons.

Findings

Confirmed four excited $ ext{Ω}_c$ states: 3000, 3050, 3066, 3090 MeV/c^2.

Validated previous LHCb observations in a different experimental environment.

Enhanced knowledge of the spectrum of excited charmed baryons.

Abstract

Using the entire Belle data sample of 980 ${\rm fb}^{-1}$ of $e^+e^-$ collisions, we present the results of a study of excited $\Omega_c$ charmed baryons in the decay mode $\Xi_c^+K^-$. We show confirmation of four of the five narrow states reported by the LHCb Collaboration: the $\Omega_c(3000)$ , $\Omega_c(3050)$, $\Omega_c(3066)$, and $\Omega_c(3090)$.